+++ /dev/null
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-layout: default
-title: Calculating Feedback and Strip-types Values
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-
-<p><em>/set_surface</em> has two values the user needs to calculate before
- use. In general these will not be calculated at run time, but
- beforehand. There may be more than one button with different values
- to turn various kinds of feedback on or off or to determine which
- kinds of strips are currently viewed/controlled.
-</p>
-<p>Both ,<em>feedback</em> and <em>strip-types</em> use bitsets to keep
- track what they are doing. Any number in a computer is made out of
- bits that are on or off, but we represent them as normal base 10
- numbers. Any one bit turned on will add a unique value to the
- number as a whole. So for each kind of feedback or strip type
- to be used, that number should be added to the total.</p>
-<h3>strip_types</h3>
-<p>
- strip_types is an integer made up of bits. The easy way to
- deal with this is to think of strip_types items being worth a number and
- then adding all those numbers together for a value to send.
- Strip Types will determine What kind of strips will be included in
- bank. This would include: Audio, MIDI, busses, VCAs, Master, Monitor
- and hidden or selected strips.
-</p>
- <ul>
- <li>
- 1 - AudioTracks.
- </li>
- <li>
- 2 - MidiTracks.
- </li>
- <li>
- 4 - AudioBuses.
- </li>
- <li>
- 8 - MidiBuses.
- </li>
- <li>
- 16 - VCAs.
- </li>
- <li>
- 32 - Master.
- </li>
- <li>
- 64 - Monitor.
- </li>
- <li>
- 128 - Audio Aux.
- </li>
- <li>
- 256 - Selected.
- </li>
- <li>
- 512 - Hidden.
- </li>
- </ul>
-<p class="note">
- Selected and Hidden bits are normally not needed as Ardour defaults to
- showing Selected strips and not showing Hidden strips. The purpose of
- these two flags is to allow showing only Selected strips or only
- Hidden strips. Using Hidden with other flags will allow Hidden strips
- to show inline with other strips.
-</p>
-<p>
- Some handy numbers to use might be: 15 (all tracks and buses), 31
- (add VCAs to that). Master or Monitor strips are generally not useful
- on a surface that has dedicated controls for these strips as there are
- /master* and /monitor* commands already. However, on a surface with
- just a bank of fader strips, adding master or monitor would allow
- access to them within the banks. Selected would be useful for working
- on a group or a set of user selected strips. Hidden shows strips the
- GUI has hidden.
-</p>
-<p class-"note">
- Audio Aux? say what? I am sure most people will have noticed that they
- can find no <em>Aux</em> strips in the Ardour mixer. There are none.
- There are buses that can be used a number of ways. From analog days,
- in OSC a bus is something that gets used as a sub mix before ending up
- going to Master. An auxiliary bus is used like a separate mixer and
- it's output goes outside the program or computer to be used as:
- a monitor mix, a back up recording, or what have you. In OSC where
- controller strips may be limited, it may be useful not to use up a
- strip for an aux that is not really a part of the mix. It is also
- useful to get a list of only aux buses if the control surface is a
- phone used to provide talent monitor mix control on stage. Each
- performer would be able to mix their own monitor. The user is free
- to enable both buses and auxes if they would prefer.
-</p>
-
-<h3>feedback</h3>
-<p>Feedback is an integer made up of bits. The easy way to
- deal with this is to think of feedback items being worth a number and
- then adding all those numbers together for a value to send.
-</p>
- <ul>
- <li>
- 1 - Button status for strips.
- </li>
- <li>
- 2 - Variable control values for strips.
- </li>
- <li>
- 4 - Send SSID as path extension.
- </li>
- <li>
- 8 - heartbeat to surface.
- </li>
- <li>
- 16 - Enable master section feedback.
- </li>
- <li>
- 32 - Send Bar and Beat.
- </li>
- <li>
- 64 - Send timecode.
- </li>
- <li>
- 128 - Send meter as dB (-193 to +6) or 0 to 1 depending on gainmode
- </li>
- <li>
- 256 - Send meter a 16 bit value where each bit is a level
- and all bits of lower level are on. For use in a LED strip. This
- will not work if the above option is turned on.
- </li>
- <li>
- 512 - Send signal present, true if level is higher than -40dB
- </li>
- <li>
- 1024 - Send position in samples
- </li>
- <li>
- 2048 - Send position in time, hours, minutes, seconds and milliseconds
- </li>
- <li>
- 8192 - Turn on extra select channel feedback beyond what a /strip supports
- </li>
- </ul>
-<p>
- So using a value of 19 would turn on feedback for strip and master
- controls, but leave meters, timecode and bar/beat feedback off.
-</p>
projects / ardour-manual-diverged / blobdiff